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Lays13
@Lays13
April 2020
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Resolva a equação:
x + y= 21
10x + 50y = 850
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MATHSPHIS
Verified answer
X + y= 21 (a)
10x + 50y = 850 (b)
10x + 10y = 210 (a)
10x + 50y = 850 (b)
(b)-(a)=
40y = 640
y = 16
Em (a)
x + y = 21
x + 16 = 21
x = 21 - 16
x = 5
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Verified answer
X + y= 21 (a)10x + 50y = 850 (b)
10x + 10y = 210 (a)
10x + 50y = 850 (b)
(b)-(a)=
40y = 640
y = 16
Em (a)
x + y = 21
x + 16 = 21
x = 21 - 16
x = 5